JavaScript

1. Formatted Date (YYYY-MM-DD)Code:varDateFormat =function(date) {if(! (DateinstanceofDate)) {Date= Date.replace (/-/g, "/"); Date=Newdate (date); } varmonth = Date.getmonth () + 1; varYear =date.getfullyear (); varDay =date.getdate (); if(Month )

Html2ja: Parse HTML target element into JavaScript array literal, each item's value is TagName, ClassName, ID and so on CSS selector combination;Showja: Indents the Html2ja generated array into a formatted display;Walkdom: Traverse the DOM target

The first part loads and runs script example When the browser encounters a A The code pops up three dialog boxes during page processing. If the browser does not support the defer property, the order in which the dialog box

定义日期：Date 对象用于处理日期和时间。可以通过 new关键词来定义 Date 对象。以下代码定义了名为 myDate 的 Date 对象：varmyDate=newDate()注释：Date 对象自动使用当前的日期和时间作为其初始值。 varmyDate=newDate(2013-1-10)Javascript 获取当前时间戳（毫秒级别）：第一种方法：vartimestamp1 = Date.parse( newDate());结果：1372751992000第二种方法：var

Scopes in 1.javascriptAs in other languages, in JavaScript, the scope of a variable also has global and local scope divisions.2. Global scope1) All variables in the outermost definition (not defined in the function body) have global scope2) Direct

(1) Cleanvar arr = [1,2,null,3, '];alert (Ext.Array.clean (arr));//clean object: (value = = null) | | (value = = undefined) | | (!allowemptystring? value = = = ': false) | | (Ext.isarray (value) && value.length = = = 0)//result for(2)

We know that in other programming languages, there is the concept of a package (command space) that helps us to better manage the code structure. such as the package in Java, module in Python. But in the JS language, in a page execution environment,

Closures (closure) are a difficult and unique feature of the JavaScript language, and many advanced applications rely on closures.the scope of a variableTo understand closures, you must first understand the special variable scope of JavaScript.The

Performance Minimize DOM access and markup, reduce the use of methods such as document.getElementsByTagName (), and store the values returned by such methods in variables. Merge scripts, style files, picture files, and so on to reduce

Many languages have date-formatted functions, but JavaScript does not provide a similar approach.The following code was found in one of the previous posts, and it was very concise and reserved./** * Formatting of the time

JavaScript's function is not just a class citizen, it is a special citizen. It has a number of unique features:1) It is an object that can store, pass, and attach properties.2) It can have lexical closure, is a handy tool for event handling, and OOP

//CookiesfunctionSetcookie (name, value, Iday) {if(iday!==false) { varOdate=NewDate (); Odate.setdate (Odate.getdate ()+iday); Document.cookie=name+ ' = ' +value+ '; expires= ' +odate+ ';p ath=/'; } Else{Document.cookie=name+ ' = '

The four snippet code example that implements the page jump function code through the JavaScript library jquery is as follows.Example 1: 1234 $(function(){varpn = $("#gotopagenum").val();//#gotopagenum是文本框的id属性location.href

When the css exceeds the limit, the ellipsis is displayed. If the css exceeds the limit, the ellipsis is displayed. Code: overflow: hidden; white-space: nowrap; text-overflow: ellipsis; Key code: text-overflow: ellipsis; Explanation: Simply put, I

JS press the Enter key to log on. js press the Enter key to log on. This article describes how to log on by pressing the Enter key in JS. This function has a wide range of practical values. Share it with you for your reference. The specific method

JQuery intercepts the specified length string code, jquery string For example, extract the string code. jQuery string truncation operations ---www.jbxue.com calculate the length and length of a string optimization is very public here

Table west border style, table border Style Table{Border-collapse: collapse;Border: none;Width: 200px;}Td{Border: solid #000 1px;} What are the CSS style settings for the table border? More details 1. All are fine borders.Table, table td, table th {

JS identifies the access browser and determines whether it is android or ios, androidios After scanning the QR code in the project, the system automatically identifies the android or ios system and downloads different systems. How does js

Use a loop or if statement to retrieve data from json, ifjson First, json data is written as follows: {"Head": [{"text": "Guangzhou", "id": "Guangzhou", "pid": "Guangdong Province" },{ "text ": "Zhengzhou", "id": "Zhengzhou", "pid": "Henan Province"}

Determine the type in js: typeof/instanceof/constructor/prototypeHow can we determine the type in js? Here are several examples: Var a = "jason "; Var B = 123; Var c = true; Var d = [1, 2, 3]; Var e = new Date ();Var f = function (){ Alert